Radio apparatus



Dec. 27, 1927. 1,653,796

' J. WOLFF RADI 0 APPARATUS Filed May 27. 1924 4 Sheets-Sheet l TroRNEYJDec. 27, 1927.

1,653,796 J. WOLFF RADIO APPARATUS Filed May 27. 1924 4 Sheets-Sheet 5 Z7 6'8 54 I'm! mill" 41 64 6 I QL HI 2 l 5 I I n J. WOLFE RADI OAPPARATUS Filed May 27. 1924 4 Sheets-Sheet 4 Patented Dec. 27, 1927.

' UNITED STATE PATENT OFFICE.-

J'OSEPH WOLFE, 0F BROOKLYN, NEW YORK, ASSIGNOR T0 SONORA PHONOGRAPH COM-PAINY, INC., A CORPORATION OF NEW YORK.

RADIO ArrAnA'rUs.

Application filed May 27, 1924. Serial No. 716,099.

This invention relates generally to a radio 7 6 the same cabinet-..Radio receiving appa'ra-.

tus nowin general use utilize an amplifier which is a separateapparatus, apart from the radio receiving apparatus. It is' costly; itis large in size, unsightly, occupies con- 10 siderable space; must beset on the radio cabinet or other convenient place, and is easily andfrequently broken. With my invention,.I dispense with thisunsightlyexposed amplifier, and so construct the radio cabinet as to utilize aportion of the interior of the cabinet as an amplifier, and also providemeans to deflect the sound in any desired direction. y

One of the objects of this invention is to for a sound amplifying memberprovided with shaped as to permit a compact arrangement. Radio receivingsets are frequently mounted in the cabinets of phonographsand thephonograph horns are used as parts of the loudspeakers of the radiosets. -It would, however, in many cases be desirable to have an enclosedradio receiving set and loud speaker independent of a phonograph. I[have therefore devised an instrument, comprising a cabinet and a hornto be concealed therein, so constructed that standard radio receivingsets may beplaced in the cabinet in compact arrangement with the loudspeaker, and that improved reproduction and amplification of sound willbe obtained.

Another object of the invention is to provide an improved cabinet, for acombined radio receiving set and loudspeaker, which will be simpleinconstruction, economical to manufacture, attractive in appearance, andin which the radio receiving set and loud speaker will be arranged incompact form.

Another object of the invention is to provide aloud speaker hornefficient in operation and so constructed that, when combined with aradio receiving set in one cabinet, a minimum increase in size of thecabinet of the radio receiving set will be required in order toaccommodate the loud speaker.

provide an instrument comprising a cabinet having space for a radiorecelvmg set, and

a sound passage therethrough and so' A further object of the inventionis to provide a fixed amplifier'within a cabinet, and means on the bellportion of the amplifier so that the audio frequency waves. can bedirected or deflected to any desired place, or so that the waves can bemodified if desired. 1 v

'A further object of the invention is to provide means of the characterherein, described, simple in construction, thoroughly reliable andefficient for its purpose, positive in operation, and inexpensive tomanufacture.

With these and other objects in view to be more fully setforthhereinafter, the invention consists in the novel construction,combination of elements, and arrangement of parts which will beexemplified in the construction hereinafter described in thespecification and illustrated in the accompanying drawings consideredtogether or separately.

The inventive idea involved is capable of receiving a variety ofmechanical expressions, one of which for the purpose of illustrating theinvention, is shown in the accompanying drawings. Y

The invention will be first described in connection with theaccompanying drawings 0 illustrating one embodiment of my invention,wherein similar reference characters are used to designate correspondingparts throughout the several views, and then more specifically definedand indicated in the ap- 35 pended claims.

In the drawings,--

Fig. 1 is a front elevation of a combined radio receiving set andloudspeaker illustrating one form of the invention, the door at themouth of the horn being open.

Fig. 2 is a top plan view of the instrument shown in Fig. 1, the coverbeing raised to show the interior.

Fig. 3 is a rear elevation, the rear wall being broken away.

Fig. 4 is a sectional side elevation taken on the line 4.-'4-. of Fig.2.

Fig. 5 is 'a sectional side elevation taken on the line 5--5 of Fig. 2,the cover being shown in closed position. I

Fig. 6 is a front elevation of a radio receiving set illustratinganother form of the invention.

Fig. 7 is a to plan view; of the instrument shown'in Fig. 6, the coverbeing raised to show the interior.

Fig. 8 is a rear elevation, the rear wall being broken away to show theinterior.

Fig. 9 is a sectional side elevation taken along line 9-9 of Fig. 7;

In the embodiment of the invention illustrated in Fig. 1 the instrumentcomprises a cabinet 10 to accommodate a radio receiving in raisedposition, as seen in Fig. 4, by means of a toggle device 23 connected atone end to the side wall 14 and at the other to the cover 21. Provisionmay also be made of a door 24 hinged to the base 16 and of suchdimensions as to close the opening '19 when swung upwardly intoposition. Preferably the door 24 is provided with a knob 25 to open andclose the same. Such door can be utilized to modify the audio frequencywaves, if desired, by closing the same.

" The receiving set 11 comprises a panel 26 having three dials 27,connected with condensers 29 at the rear of the panel, and two knobs ordials. 28, which may control rheostats 28 for adjusting certain lamps.-Projecting rearwardly from the panel 27 and perpendicular thereto is'ashelf 'or support 30 on which are mounted lamp sockets 31 to receivelamps 32. As shown in Figs. 1 to 4,

. the receiving set maybe placed with the shelf 30 resting on side wall18 below the opening 20 in the said front wall and then fastened inposition by screws 33 passing through the panel at its upper and sideedges and extending into the front wall 18.

' Mounted in the cabinet below and to the rear of the receiving set 11is the loud speaker 12 comprising a .horn 34, a conical portion 35 andaloud speaker device 36 attached to the small end of the conical portion35 and connected'by wiresor conductors 37 with a jack or switch 38beneath the dials-28. I

As shown in Figs. 1 to 4, the horn un't has a rectangular mouth and isof suc height that it may be inserted into the cabi net from the frontbelow the lower edge of the front wall 18, the mouth of the horn beingof such dimensions as to fill the opening 19. The horn 34 comprisesparallel upper and lower walls 39 and 40, respectively,

and side walls 41 and 42conver 111g rearwardly to merge with the walls 0an, opening in a block 43 at the rear of the cabinet.

born 58. y

The 'doors 56 can be utilized to deflect the 110 Laban/ea The block 43has at top an opening 44 over which fits the large end of a conicalportion 35 which is secured to theblock 44 by suitable means such asscrews 45.

Accordingto another form of the inven- 70 tion illustrated in Figs. 6 to9, inclusive, provision is made of a cabinet 46 ofgreater length thanthe radio receiving set 11 which may be'the same as that shown in thefirst form of the invention. The cabinet 46 com- 75 prises a rear wall47, side walls 48 and 49, a base 50 having feet 51 of suitablecushioning material attached thereto, a front wall 52 spaced from theleft side wall 48 and having an opening to receive the radio receiv- 807 ing set 11. The cabinet 46 is provided with a, cover 53 connected withthe rear wall 47 by means of hinges 54 and connected with the left sidewall 48 by a toggle device55 to hold the cover in open position, asshown ,85. in Fig; 9. The opening at..the left of the front wall 52'maybe closed by means of doors 56 hinged at their edgesto the wall 48 andwall 52 respectively and provided with knobs 57. Y

In this form of invention, the horn 58 is illustrated as having upperand lower walls ,5?) and 60 and side walls 61 and 62 convergsuitableterminal or jack 65 by means of wires or'conductors 66. Asshown inFig.7, the shelf 30 is cut away at its left end to accommodate the audiofrequency waves in any direction, or such doors can be used to modifysuch waves by having thesame in closed position. I- have found that byenclosing-the amplifier in the radio cabinet, I. secured eatlyim- 1115proved reproduction, and it is o vious that I have greatly inlproved theappearanceof the apparatus as a whole.

- In accordance with the provisions of the patent statute, I havedescribed the principle'of my invention/together with the apparatuswhich I now consider to represent the best embodiment thereof, but Idesire it v to be understood that my invention is not confined to theparticular form of apparatus herein shown and described, thesame beingmerely illustrative, and. that the invention can be carried out in otherways without. departing from the spirit of my invention, 7 and,therefore, I claim broadly the right to employ all equivalentinstrumentalities coming within the scope of the appended claims, and bymeans of which the objects of my invention are attained, and the newresults ac- "complished, as herein set forth, as it is obvious that theparticular embodiment herein shown and described is only one of manythat can be employed to attain these objects and accomplish theseresults.

Having described my'invention, what I claim and desire to secure byLetters. Patent -.1. In a radio cabinet, a rectangular outer casing havng a rectangular opening in the front wall thereof, a lintel spanningsaid opening, said lintel being parallel to the base of the cabinet andspaced therefrom, a resonance box in the bottom 'of said cabinet havinga mouth substantially (yo-extensive with that portion of the opening inthe front wall of the cabinet below said lintel, a radio set t baseboardhaving a vertical control" panel at the front edge thereof, said panelforming a closure for the'portion of said opening above said lintel whenplaced in position against the front wall of'the casing with saidbaseboard inside the cabinet.

2. In a radio cabinet, a rectangular outer casing having a rectangularopening in the front wall thereof, a lintel spanning said opening, saidlintel-being arallel to the base of the'cabinet and space therefrom, apair v of low, vertical walls converging from the front ends of thecabinet to a point adjacent the central rear portion thereof, said-walls having a horizontal cover provided with a circular opening, aconical loud speaker megaphone having abell secured 3. In a radiocabinet, anouter, rectangular casing having a rectangular opening in thefront wall thereof and a lintel spanning said opening, said lintel beingparallel to the base of the cabinet and spaced therefrom, a pair of lowvertical walls converging from the front ends of the'said casing to apoint adjacent the central rear portion thereof, .said walls having ahorizontal cover, provided with a circular opening, a conical loudspeaker megaphone having abell secured to said cover with the bellencircling said opening, said walls and said cover delimiting aresonance chamber having an outlet substan tially co-extensive with thatportion of the opening in the front wall of thecasing below'said lintel,a radio set baseboard having a vertical control panel at the front edgethereof, said panel forming a closure for the y portion of said openingabove said lintel when placed in position against the front wall ofthecasing with said baseboard inside the cabinet. p a

This specification signed this 21st day of May, 1924. l JOSEPH WOLFF.

